Science
Mechanism of Action
Cinnamal functions as an antioxidant by effectively neutralizing free radicals, thereby protecting skin cells from oxidative damage and contributing to a more youthful appearance. It exhibits potent antimicrobial, antibacterial, and antifungal capabilities, inhibiting the proliferation of harmful pathogens and potentially aiding in the treatment of breakouts. Additionally, its anti-inflammatory effects can attenuate inflammatory mediators, offering benefits for conditions such as acne vulgaris and contact dermatitis, and supporting accelerated wound healing.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Topical application of 0.5 mg/mL cinnamaldehyde promoted faster healing of skin wounds infected by *Pseudomonas aeruginosa* through reduced bacterial colonization and attenuated inflammatory mediators.
- 02 In a UVB-exposed mouse model, topical cinnamaldehyde significantly inhibited wrinkle formation, epidermal hyperplasia, and dermal inflammatory cell infiltration. It also reduced Reactive Oxygen Species (ROS) production and accelerated DNA damage repair in UVB-irradiated human keratinocytes *in vitro*.
- 03 Studies on human keratinocytes demonstrated its antioxidant effect and potential for addressing various skin disorders.
- 04 In a rat's skin burn model, cinnamaldehyde exhibited significant wound healing properties attributed to its antimicrobial, antioxidant, and anti-inflammatory effects.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Cinnamal (cinnamaldehyde) is susceptible to degradation, potentially forming traces of styrene, particularly during storage or transport under conditions of high humidity and temperature. To ensure stability and protect against oxidation, it typically requires the incorporation of stabilizers such as BHT or BHA.
Safety
Safety Profile
The Expert Panel for Cosmetic Ingredient Safety (CIR) defers review of individual fragrance ingredients like Cinnamal to the IFRA program unless there are significant non-fragrance uses. The European Union lists Cinnamal as an 'allergenic' substance, mandating its declaration in ingredient lists if concentrations exceed 0.001% in leave-on products and 0.01% in rinse-off products. The Food and Drug Administration (FDA) includes Cinnamal on its Generally Recognized As Safe (GRAS) list for use as a synthetic flavoring substance, which is a different regulatory context than topical skincare.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its promising antioxidant, antimicrobial, and wound-healing benefits demonstrated in studies, Cinnamal poses a significant risk of skin irritation and sensitization, largely due to its classification as an allergenic substance and high irritancy rating.
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